Title: Scanning optical apparatus
Application Number: 95106592 Application Date: 1995.05.24
Publication Number: 1114425 Publication Date: 1996.01.03
Approval Pub. Date: 1998.04.15 Granted Pub. Date: 1998.04.15
International Classifi-cation: G02B26/10
Applicant(s) Name: Canon Kabushiki Kaisha Address:
Inventor(s) Name: Mikio Nakasugi
Attorney & Agent: YANG XIAOGUANG
Abstract:
    A scanning optical apparatus has a stationary shaft and a rotary sleeve rotatably fitting to each other. The apparatus is arranged to deflection-scan a light beam by rotating a rotary polygon mirror attached to the rotary sleeve. In the apparatus a second permanent magnet, which is repulsive to a first permanent magnet mounted on the stationary shaft, is disposed on a lower end side of the rotary sleeve. Further, a third permanent magnet is placed on a base to which the stationary shaft is fixed so that the third magnet can provide a repulsive force in a direction to urge the second permanent magnet toward the first permanent magnet.
Time: 9
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